MORIYA, OSAMU;OKAWARA, MAKOTO;UENO, YOSHIO, CHEM. LETT., 1984, N 8, 1437-1440
作者:MORIYA, OSAMU、OKAWARA, MAKOTO、UENO, YOSHIO
DOI:——
日期:——
A NEW SYNTHETIC ROUTE TO α-METHYLENE AND β-METHYLENE-γ-BUTYROLACTONES VIA HOMOLYTIC CARBOCYCLIZATION
作者:Osamu Moriya、Makoto Okawara、Yoshio Ueno
DOI:10.1246/cl.1984.1437
日期:1984.8.5
α-Methylene-γ-butyrolactones were prepared using butoxyallene via stereoselective homolytic carbocyclization of vinyl radicals, similarly, β-methylene analogues were also prepared.
An improved synthesis of a polymer-supported distannane and its application to radical formation
作者:Jörg Junggebauer、Wilhelm P Neumann
DOI:10.1016/s0040-4020(96)01078-2
日期:1997.1
A polymer-supported distannane 1 was prepared by treatment of tin halide resin with lithium naphthalenide or sodiumnaphthalenide in THF. The content of the polymers 1 was determined to be 0.95 to 1.13 mmol/g tin as ditin. The polymer-supported distannane reagent was successfully applied to radical cyclizations of acyclic α-haloesters to yield γ-butyrolactones.